Evidence map›Paper›PMID 26108284›Full record

ArticleScientific reports2015

Considerably Unfolded Transthyretin Monomers Preceed and Exchange with Dynamically Structured Amyloid Protofibrils.

Minna Groenning, Raul I Campos, Daniel Hirschberg, Per Hammarström, Bente Vestergaard

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.6field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. A molecular basis for tetramer destabilization and aggregation of transthyretin Ala97Ser.Protein science : a publication of the Protein Society · 2023
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Transthyretin Misfolding, A Fatal Structural Pathogenesis Mechanism.International journal of molecular sciences · 2021
    Review
  11. Review
  12. Biophysical characterization and modulation of Transthyretin Ala97Ser.Annals of clinical and translational neurology · 2019
    Article
  13. Two distinct aggregation pathways in transthyretin misfolding and amyloid formation.Biochimica et biophysica acta. Proteins and proteomics · 2019
    Article
  14. Article
  15. Article
  16. Article
  17. Kinetic analysis of the multistep aggregation pathway of human transthyretin.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Minna GroenningDepartment of Pharmacy and Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.
Raul I CamposIFM - Department of Chemistry, Linköping University, Linköping, Sweden.
Daniel HirschbergIFM - Department of Chemistry, Linköping University, Linköping, Sweden.
Per HammarströmIFM - Department of Chemistry, Linköping University, Linköping, Sweden.
Bente VestergaardDepartment of Pharmacy and Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.
Linköping University · SEUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Despite numerous studies, a detailed description of the transthyretin (TTR) self-assembly mechanism and fibril structure in TTR amyloidoses remains unresolved. Here, using a combination of primarily small -angle X-ray scattering (SAXS) and hydrogen exchange mass spectrometry (HXMS) analysis, we describe an unexpectedly dynamic TTR protofibril structure which exchanges protomers with highly unfolded monomers in solution. The protofibrils only grow to an approximate final size of 2,900 kDa and a length of 70 nm and a comparative HXMS analysis of native and aggregated samples revealed a much higher average solvent exposure of TTR upon fibrillation. With SAXS, we reveal the continuous presence of a considerably unfolded TTR monomer throughout the fibrillation process, and show that a considerable fraction of the fibrillating protein remains in solution even at a late maturation state. Together, these data reveal that the fibrillar state interchanges with the solution state. Accordingly, we suggest that TTR fibrillation proceeds via addition of considerably unfolded monomers, and the continuous presence of amyloidogenic structures near the protofibril surface offers a plausible explanation for secondary nucleation. We argue that the presence of such dynamic structural equilibria must impact future therapeutic development strategies.

Indexed as

AmyloidCircular DichroismDeuterium Exchange MeasurementMass SpectrometryMicroscopy, Electron, TransmissionPrealbuminProtein Structure, TertiaryProtein UnfoldingScattering, Small AngleSpectroscopy, Fourier Transform InfraredX-Ray DiffractionAmyloidPrealbumin

Identifiers

PMID26108284
PMCPMC4480009
OpenAlexW1075695031

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.